Aquaporin-9 (AQP-9) is a
protein that in humans is encoded by the AQP9gene.[5]
The
aquaporins/
major intrinsic protein are a family of water-selective membrane channels. Aquaporin-9 has greater sequence similarity with AQP3 and AQP7 and they may be a subfamily. Aquaporin-9 allows passage of a wide variety of noncharged solutes. AQP-9 stimulates urea transport and osmotic water permeability; there are contradicting reports about its role in providing glycerol permeability. Aquaporin-9 may also have some role in specialized leukocyte functions such as immunological response and bactericidal activity.[5]
Ishibashi K, Kuwahara M, Gu Y, et al. (1998). "Cloning and functional expression of a new aquaporin (AQP9) abundantly expressed in the peripheral leukocytes permeable to water and urea, but not to glycerol". Biochem. Biophys. Res. Commun. 244 (1): 268–74.
doi:
10.1006/bbrc.1998.8252.
PMID9514918.
Damiano A, Zotta E, Goldstein J, et al. (2001). "Water channel proteins AQP3 and AQP9 are present in syncytiotrophoblast of human term placenta". Placenta. 22 (8–9): 776–81.
doi:
10.1053/plac.2001.0717.
PMID11597198.
Wang S, Chen J, Beall M, et al. (2005). "Expression of aquaporin 9 in human chorioamniotic membranes and placenta". Am. J. Obstet. Gynecol. 191 (6): 2160–7.
doi:
10.1016/j.ajog.2004.05.089.
PMID15592307.
Damiano AE, Zotta E, Ibarra C (2006). "Functional and molecular expression of AQP9 channel and UT-A transporter in normal and preeclamptic human placentas". Placenta. 27 (11–12): 1073–81.
doi:
10.1016/j.placenta.2005.11.014.
PMID16480766.
Loitto VM, Huang C, Sigal YJ, Jacobson K (2007). "Filopodia are induced by aquaporin-9 expression". Exp. Cell Res. 313 (7): 1295–306.
doi:
10.1016/j.yexcr.2007.01.023.
PMID17346701.
Warth A, Mittelbronn M, Hülper P, et al. (2007). "Expression of the water channel protein aquaporin-9 in malignant brain tumors". Appl. Immunohistochem. Mol. Morphol. 15 (2): 193–8.
doi:
10.1097/01.pai.0000213110.05108.e9.
PMID17525633.
S2CID24070875.